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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8037de1421sm3989946066b.41.2025.12.31.03.54.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 31 Dec 2025 03:54:42 -0800 (PST) Message-ID: <7eacdba8-1dec-45ac-b48d-55cc67a98ae7@oss.qualcomm.com> Date: Wed, 31 Dec 2025 12:54:39 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] arm64: dts: qcom: purwa: Drop the Hamoa workaround for PDC To: Maulik Shah , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20251231-purwa_pdc-v1-0-2b4979dd88ad@oss.qualcomm.com> <20251231-purwa_pdc-v1-2-2b4979dd88ad@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20251231-purwa_pdc-v1-2-2b4979dd88ad@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: fKyuJSLwHhKk5nfD2D0mEoABFUd0ExVG X-Proofpoint-GUID: fKyuJSLwHhKk5nfD2D0mEoABFUd0ExVG X-Authority-Analysis: v=2.4 cv=HNvO14tv c=1 sm=1 tr=0 ts=69550f03 cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=E_S6SxJbg-Xv3qsyNckA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjMxMDEwNCBTYWx0ZWRfX4vba6uugGnqB 7LF6+l+Cps2oCtoVklz5vNYzH5PU6dHsmQQxms+YwAKS9hkd2PuBPu7f5Axo9DdfxwAPtjxk9zQ MRFk//D86Q8cHag5pmKYZT18O4OrIeOLyfhcuOxDsXcEQJaPBgU7HAxykXSr49lgod3rgNzP3+O l6iT1gpYsCMSGiUAmqB964vsBYvtcN1o8eckPWjmm50LAHmv532iMT1GAnYqHGuv8O5kkSvoQOr IgN6xX+YFcmcJxodJ1m87J5w8ftZWgEQuGH81ltODSYMZ7uq/9vaw/dIg2OWG8HJ8NmSQP/RKU6 Hgxd6NmHw9DTpMq1cRvBmkIb4FvgtvIgQ98QmsqnCkJYKc49bTarhsI1Efbddu3CSjpKoxFf10I TXzKfkUU0knM+8QrO3K8hs/ziYI2pdwyjUF4avThn7BIR4sGcqlgNYcFkvk3/GAo0vyUKXiTrOC TBtoOEFawycmlOo9IIQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-31_03,2025-12-31_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 impostorscore=0 bulkscore=0 adultscore=0 suspectscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 spamscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512310104 On 12/31/25 11:18 AM, Maulik Shah wrote: > Purwa shares the Hamoa (X1E80100) PDC device, but the hardware register > bug addressed in commit e9a48ea4d90b ("irqchip/qcom-pdc: Workaround > hardware register bug on X1E80100") is already fixed in Purwa silicon. > > Hamoa compatible forces the software workaround. Use the Purwa specific > compatible string for the PDC node to remove the workaround from Purwa. > > Fixes: f08edb529916 ("arm64: dts: qcom: Add X1P42100 SoC and CRD") > Signed-off-by: Maulik Shah > --- > arch/arm64/boot/dts/qcom/purwa.dtsi | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/purwa.dtsi b/arch/arm64/boot/dts/qcom/purwa.dtsi > index 2cecd2dd0de8c39f0702d6983bead2bc2adccf9b..e3e2dfedf0b3cad90b767d6b28fb0c60078d192b 100644 > --- a/arch/arm64/boot/dts/qcom/purwa.dtsi > +++ b/arch/arm64/boot/dts/qcom/purwa.dtsi > @@ -152,6 +152,10 @@ &pcie6a_phy { > compatible = "qcom,x1p42100-qmp-gen4x4-pcie-phy"; > }; > > +&pdc { > + compatible = "qcom,x1p42100-pdc", "qcom,pdc"; I think it would make sense to add a comment above the compatible line, saying that the PDC is largely the same as the bigger brother's, sans the bug Konrad